Document Details
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Title:
Containment Technical Note No. 4: Centaur radiation measurements
Author(s):
Document Type:
REPORT
Publication Date:
1965 Sep 21
Document Pages:
9 p.
Document Number(s):
UCRL-ID-124772
Originating Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OpenNet Entry Date:
1997 Apr 14
OpenNet Modified Date:
2009 Nov 11
Description/Abstract:
This report discusses measurements of the radiation levels in the Centaur stemming materials which were made 260 ft. and 360 ft. from the device and at the surface 560 ft. from the device. The measurements were made in the fill in the casing. The radiation levels are provided. the material reaching the counters is fractionated due to its filtering through the fill. It can be assumed that the major components are the rare gases with perhaps some contribution from the halogens. The decay rate of the gases is similar to that of mixed fission products to within better than a factor of 1.5 out to a decay time of about 10 days. For halogens the factor is about 2. Thus in analyzing the readings the error is not large if the mixed fission product decay rate is used. The assumption is also made that the activity is due to the density or pressure of gas and not to local deposits of fission products at or near the position of the counters.